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Table 4 Summary of hierarchical logistic regression analyses at year five with SCL-90-R caseness as the dependent variable

From: Cognitive impairment as a predictor of long-term psychological distress in patients with polysubstance use disorders: a prospective longitudinal cohort study

Predictor

Model 1

Model 2

Model 3

Wald

p

OR

95% CI

Wald

p

OR

95% CI

Wald

p

OR

95% CI

MoCA®

            

(Constant)

.861

.353

.8

–

5.470

.019

.5

–

15.258

<.001

.1

–

MoCA®+

4.336

.037

2.5

1.1–5.9

5.917

.015

3.1

1.2–7.5

5.956

.015

3.4

1.3–9.1

DUDIT-C

    

7.177

.007

1.1

1.0–1.3

6.180

.013

1.1

1.0–1.3

Baseline GSI

        

11.571

<.001

3.7

1.7–7.8

 

χ2 = 4.5, p = .033, R2 = .055 Correctly classified 58.9%

χ2 = 12.7, p = .002, R2 = .151

Correctly classified 62.3%

χ2 = 26.5, p = <.001, R2 = .295

Correctly classified 67.0%

WASI FSIQ

            

(Constant)

.269

.604

.9

–

3.492

.062

.6

–

13.658

<.001

.2

–

WASI+

5.464

.019

4.8

1.3–18.1

5.794

.016

5.2

1.4–19.8

4.322

.038

4.5

1.1–18.7

DUDIT-C

    

5.926

.015

1.1

1.0–1.2

4.917

.027

1.1

1.0–1.2

Baseline GSI

        

11.174

<.001

3.5

1.7–7.2

 

χ2 = 6.8, p = .009, R2 = .080

Correctly classified 56.9%

χ2 = 13.4, p = .001, R2 = .155

Correctly classified 65.7%

χ2 = 26.6, p = <.001, R2 = .291

Correctly classified 66.7%

BRIEF-A

            

(Constant)

3.844

.050

.5

–

6.377

.012

.4

–

11.712

<.001

.2

–

BRIEF-A+

5.869

.015

2.9

1.2–6.9

5.436

.020

2.9

1.2–7.0

.634

.426

1.5

.5–4.2

DUDIT-C

    

3.999

.046

1.1

1.0–1.2

3.195

.074

1.1

1.0–1.2

Baseline GSI

        

11.712

.010

2.9

1.3–6.7

 

χ2 = 6.1, p = .013, R2 = .083

Correctly classified 62.1%

χ2 = 10.0, p = .007, R2 = .135 Correctly classified 66.0%

χ2 = 17.5, p = <.001, R2 = .226

Correctly classified 66.0%

  1. MoCA® Montreal Cognitive Assessment®, WASI Wechsler Abbreviated Scale of Intelligence, BRIEF-A Behavior Rating Inventory of Executive Function – Adult version, DUDIT-C Drug Use Identification Test Consumption Items, Baseline GSI Baseline Symptom Checklist-90-Revised Global Severity Index, Model 1 Cognitive impairment as predictor variable, Model 2 Cognitive impairment + DUDIT-C score as predictor variables, Model 3 Cognitive impairment + DUDIT-C score + baseline SCL-90-R GSI score as predictor variables, OR odds ratio, CI confidence interval, χ2 = Omnibus test of model coefficient; R2 = Nagelkerke R-squared. Significant p values at α = .05 in bold